US9142890B2 - Antenna assembly - Google Patents
Antenna assembly Download PDFInfo
- Publication number
- US9142890B2 US9142890B2 US13/730,869 US201213730869A US9142890B2 US 9142890 B2 US9142890 B2 US 9142890B2 US 201213730869 A US201213730869 A US 201213730869A US 9142890 B2 US9142890 B2 US 9142890B2
- Authority
- US
- United States
- Prior art keywords
- section
- metal sheet
- notch
- antenna assembly
- main section
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related, expires
Links
- 239000002184 metal Substances 0.000 claims abstract description 45
- 230000002093 peripheral effect Effects 0.000 claims abstract description 8
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
- H01Q13/10—Resonant slot antennas
- H01Q13/106—Microstrip slot antennas
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
- H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
- H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
- H01Q1/242—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use
- H01Q1/243—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use with built-in antennas
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/48—Earthing means; Earth screens; Counterpoises
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
- H01Q9/04—Resonant antennas
- H01Q9/0407—Substantially flat resonant element parallel to ground plane, e.g. patch antenna
- H01Q9/0421—Substantially flat resonant element parallel to ground plane, e.g. patch antenna with a shorting wall or a shorting pin at one end of the element
Definitions
- the present disclosure relates to antenna assemblies.
- Antennas are important elements of wireless communication devices, such as mobile phones.
- the bandwidth of the antennas is an important factor that affects the efficiency of receiving and transmitting signals of the antennas.
- structures of the antennas are limited by the interior space of the wireless communication devices. Thus, it is a great challenge to improve the bandwidth of antennas under the condition of not changing so much on the structures of the antennas.
- FIG. 1 is an assembled, isometric view of an antenna assembly in accordance with an exemplary embodiment.
- FIG. 2 is an exploded view of the antenna assembly of FIG. 1 .
- FIG. 3 is an exploded view of the antenna assembly of FIG. 1 viewed from another angle.
- FIG. 4 is a return loss graph of the antenna assembly of FIG. 1 .
- FIG. 1 shows an antenna assembly 100 incorporated in a wireless communication device, such as a mobile phone or a personal digital assistant.
- the antenna assembly 100 includes a carrier 10 , an antenna 30 , and a metal sheet 50 .
- the antenna 30 and the metal sheet 50 both are attached to the carrier 10 .
- the carrier 10 may be a printed circuit board of the wireless communication device incorporating the antenna assembly 100 .
- the carrier 10 includes a grounding area 12 , grounding the antenna assembly 100 , and a clearance zone 14 , adjacent to the grounding area 12 .
- the clearance zone 14 can also be known in the art as a “keep out zone,” and the like.
- the purpose of clearance zone 14 is to not permit other elements on the carrier 10 to be placed in a predetermined area to interfere the antenna 30 .
- the clearance zone 14 is located at an end of the carrier 10 .
- the clearance zone 14 has a feed point 142 configured for feeding current into the antenna 30 .
- the antenna 30 is a dual-band antenna.
- the antenna 30 is positioned opposite to the clearance zone 14 .
- the antenna 30 includes a radiating body 31 , a feed terminal 32 , and a grounding terminal 33 .
- the radiating body 31 includes a first radiating portion 34 and a second radiating portion 35 .
- the first radiating portion 34 includes a first main section 342 , a second main section 343 , a first extending section 344 , and a second extending section 345 .
- Both the first and second main sections 342 , 343 are substantially rectangular.
- the second main section 343 connects with an end of the first main section 342 and has a width greater than the width of the first main section 342 .
- the second main section 343 has a first edge aligned with a first edge of the first main section 342 .
- the first extending section 344 is coplanar with the first and second main sections 342 , 343 .
- the first extending section 344 is substantially L-shaped.
- a first end of the first extending section 344 connects with a second edge of the first main section 342 opposite to the first edge of the first main section 342 .
- a second end of the first extending section 344 extends perpendicularly from the first end and extends towards the second main section 343 .
- the second extending section 345 extends from the first edge of the first main section 342 and the first edge of the second main section 343 and bends to be perpendicular to the first main section 342 (or the second main section 343 ).
- the first radiating portion 34 can be used to receive and transmit wireless signals having a first central frequency of about 1900 MHz.
- the second radiating portion 35 is coplanar with the first main section 342 of first radiating portion 34 .
- the second radiating portion 35 includes a first connecting section 352 , a second connecting section 353 , a third connecting section 354 , and a forth connecting section 355 .
- the first connecting section 352 extends perpendicularly from an end of the first main section 342 furthest from the second main section 343 .
- the second connecting section 353 extends perpendicularly from the first connecting section 352 and extends towards the second main section 343 .
- the third connecting section 354 connects with the second connecting section 353 and extends towards the second main section 343 to beyond the second main section 343 .
- the forth connecting section 355 extends perpendicularly from the third connecting section 354 .
- the second radiating portion 35 can be used to receive and transmit a second wireless signal having a central frequency of about 900 MHz.
- the feed terminal 32 is substantially L-shaped.
- the feed terminal 32 extends perpendicularly from the second extending section 345 and extends towards the second radiating portion 35 , and then bends towards the carrier 10 , to electrically connect with the feed point 142 in the clearance zone 14 .
- the grounding terminal 33 extends perpendicularly from the first extending section 344 , and then bends towards the carrier 10 , to electrically connect with the metal sheet 50 .
- the metal sheet 50 has a size substantially equal to the area of the clearance zone 14 and is attached to the clearance zone 14 .
- the metal sheet 50 is electrically connected to the grounding area 12 , to be a ground reference of the antenna 30 .
- the metal sheet 50 grounds the antenna 30 .
- the metal sheet 50 defines a first notch 52 and a second notch 54 .
- the first notch 52 is defined at en edge proximate to the grounding area 12 .
- the second notch 54 is defined through an end of the metal sheet 50 and extends along a direction parallel to the first notch 52 .
- the total length of the current path in a first notch peripheral wall of the first notch 52 and in a second notch peripheral wall of the second notch 54 is in a predetermined proportion to the wavelength of the signals received and transmitted by the first radiating portion 34 .
- the metal sheet 50 resonates with the first radiating portion 34 to increase the bandwidth of the high frequency band (e.g., 1900 MHz band).
- the antenna assembly 100 When electrical current flows in the feed terminal 32 , the radiating body 31 , the grounding terminal 33 , the metal sheet 50 , and the grounding area 12 , to form a current loop, the antenna assembly 100 receives and transmits the first wireless signal having a high frequency and the second wireless signal having a low frequency. In this case, a current is induced in the metal sheet 50 .
- the existence of the first and second notches 52 , 54 enables the induced current in the metal sheet 50 to couple with current in the first radiating portion 34 , thus enabling the metal sheet 50 to resonate with the first radiating portion 34 .
- the curve 2 shows a return loss (RL) graph of the antenna assembly 100 without the metal sheet 50 .
- the curve 1 shows a RL graph of the antenna assembly 100 having the metal sheet 50 defining the first and second notches 52 , 54 . It is shown that the antenna assembly 100 with the metal sheet 50 defining the first and second notches 52 , 54 has an obvious increased bandwidth of the high frequency band.
- the antenna 30 is not limited to a dual-band antenna.
- the antenna 30 can also be a single band antenna or multi-band antenna.
- the antenna 30 is not limited to the structure described above.
- the metal sheet 50 can also have only the first notch 52 or the second notch 54 . Furthermore, the shapes of the first notch 52 and the second notch 54 can also be changed, as long as the notch(es) defined on the metal sheet 50 has a peripheral wall length in a predetermined proportion to the wavelength of signals which need an increase in bandwidth.
- the antenna assembly 100 has the metal sheet 50 attached to the clearance zone 14 of the carrier 10 .
- the metal sheet 50 defines the first and second notches 52 , 54 , enabling the metal sheet 50 to be cable of the antenna 30 , thus increasing the bandwidth of the antenna 30 and improving the efficiency of receiving and transmitting signals of the antenna 30 .
- the metal sheet 50 is positioned on the clearance zone 14 of the carrier 10 , effectively utilizing the clearance zone 14 and occupying no extra space of the carrier 10 or the wireless communication device incorporating the antenna assembly 100 .
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Support Of Aerials (AREA)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW101108905A | 2012-03-15 | ||
TW101108905A TWI581499B (zh) | 2012-03-15 | 2012-03-15 | 天線組件 |
TW101108905 | 2012-03-15 |
Publications (2)
Publication Number | Publication Date |
---|---|
US20130241786A1 US20130241786A1 (en) | 2013-09-19 |
US9142890B2 true US9142890B2 (en) | 2015-09-22 |
Family
ID=49157123
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US13/730,869 Expired - Fee Related US9142890B2 (en) | 2012-03-15 | 2012-12-29 | Antenna assembly |
Country Status (2)
Country | Link |
---|---|
US (1) | US9142890B2 (zh) |
TW (1) | TWI581499B (zh) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20200044308A1 (en) * | 2018-08-03 | 2020-02-06 | AAC Technologies Pte. Ltd. | Antenna system and mobile terminal |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6531544B2 (ja) | 2015-07-27 | 2019-06-19 | 富士通株式会社 | アンテナ装置 |
EP3876347A4 (en) * | 2019-01-10 | 2021-12-29 | Japan Aviation Electronics Industry, Limited | Antenna and communication device |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20040058723A1 (en) * | 2002-09-19 | 2004-03-25 | Filtronic Lk Oy | Internal atenna |
US20110001681A1 (en) * | 2009-07-02 | 2011-01-06 | Hon Hai Precision Industry Co., Ltd. | Multiband antenna |
US20120223864A1 (en) * | 2011-03-03 | 2012-09-06 | Nxp B.V. | Multiband antenna |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102013568A (zh) * | 2010-12-01 | 2011-04-13 | 惠州Tcl移动通信有限公司 | 一种四频段的内置天线及其移动通信终端 |
-
2012
- 2012-03-15 TW TW101108905A patent/TWI581499B/zh not_active IP Right Cessation
- 2012-12-29 US US13/730,869 patent/US9142890B2/en not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20040058723A1 (en) * | 2002-09-19 | 2004-03-25 | Filtronic Lk Oy | Internal atenna |
US20110001681A1 (en) * | 2009-07-02 | 2011-01-06 | Hon Hai Precision Industry Co., Ltd. | Multiband antenna |
US20120223864A1 (en) * | 2011-03-03 | 2012-09-06 | Nxp B.V. | Multiband antenna |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20200044308A1 (en) * | 2018-08-03 | 2020-02-06 | AAC Technologies Pte. Ltd. | Antenna system and mobile terminal |
Also Published As
Publication number | Publication date |
---|---|
US20130241786A1 (en) | 2013-09-19 |
TW201338266A (zh) | 2013-09-16 |
TWI581499B (zh) | 2017-05-01 |
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Legal Events
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AS | Assignment |
Owner name: FIH (HONG KONG) LIMITED, HONG KONG Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:KO, CHENG-HUNG;CHANG, HAO-YING;TSAI, CHIH-YANG;REEL/FRAME:029545/0485 Effective date: 20121224 |
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STCF | Information on status: patent grant |
Free format text: PATENTED CASE |
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Free format text: PAYMENT OF MAINTENANCE FEE, 4TH YEAR, LARGE ENTITY (ORIGINAL EVENT CODE: M1551); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY Year of fee payment: 4 |
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LAPS | Lapse for failure to pay maintenance fees |
Free format text: PATENT EXPIRED FOR FAILURE TO PAY MAINTENANCE FEES (ORIGINAL EVENT CODE: EXP.); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY |
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STCH | Information on status: patent discontinuation |
Free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362 |
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FP | Lapsed due to failure to pay maintenance fee |
Effective date: 20230922 |